There are a number of polymers and other products used for the manufacture of UF membrane layer. The selection of a given polymer as a membrane material is based on extremely certain buildings such as molecular weight, chain versatility, chain communication, etc. Some of these materials are polysulfone, polyethersulfone, sulfonated polysulfone, polyvinylidene fluoride, polyacrylonitrile, cellulosics, polyimide, polyetherimide, aliphatic poly-amides, and also polyetherketone. Not natural materials have actually likewise been utilized such as alumina as well as zirconia. The framework of UF membrane layer could be symmetrical or asymmetric. The thickness of symmetric membrane (permeable or nonporous) is variety from 10 to 200 µm. Nanofiltration system are characterised based on their retention of loaded and unloaded fragments. The retention of a Nanofiltration membrane layer could be figured out via speculative filtering examinations with pre-selected molecules. A NF system is also ion-selective. This is the capability to differentiate various ions from each other. Because a nanofiltration system gathers solid loaded groups in its membrane layer structure, electrostatic repulsion/attraction pressures may happen in between the elements in the liquid as well as the NF membrane surface area, which leads to a specific degree of ion selectivity. Based upon the screen effect (pore dimension 1 nm) and also the molecular size of chlorides (0.